/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.taskmanager;

import java.util.Map;
import java.util.NoSuchElementException;
import java.util.logging.Logger;

import javolution.util.FastMap;
import net.sf.l2j.gameserver.ThreadPoolManager;
import net.sf.l2j.gameserver.model.L2Character;

/**
 * @author la2 Lets drink to code!
 */
public class DecayTaskManager {
	protected static final Logger _log = Logger
			.getLogger(DecayTaskManager.class.getName());
	protected Map<L2Character, Long> _decayTasks = new FastMap<L2Character, Long>()
			.shared();
	private static DecayTaskManager _instance;

	public DecayTaskManager() {
		ThreadPoolManager.getInstance().scheduleAiAtFixedRate(
				new DecayScheduler(), 10000, 5000);
	}

	public static DecayTaskManager getInstance() {
		if (_instance == null)
			_instance = new DecayTaskManager();
		return _instance;
	}

	public void addDecayTask(L2Character actor) {
		_decayTasks.put(actor, System.currentTimeMillis());
	}

	public void addDecayTask(L2Character actor, int interval) {
		_decayTasks.put(actor, System.currentTimeMillis() + interval);
	}

	public void cancelDecayTask(L2Character actor) {
		try {
			_decayTasks.remove(actor);
		} catch (NoSuchElementException e) {
		}
	}

	private class DecayScheduler implements Runnable {
		protected DecayScheduler() {
			// Do nothing
		}

		public void run() {
			Long current = System.currentTimeMillis();
			int delay;
			try {
				if (_decayTasks != null)
					for (L2Character actor : _decayTasks.keySet()) {
						if (actor.isRaid() && !actor.isRaidMinion())
							delay = 30000;
						else
							delay = 8500;
						if (current - _decayTasks.get(actor) > delay) {
							actor.onDecay();
							_decayTasks.remove(actor);
						}
					}
			} catch (Exception e) {
				// TODO: Find out the reason for exception. Unless caught here,
				// mob decay would stop.
				_log.warning(e.toString());
			}
		}
	}

	@Override
	public String toString() {
		String ret = "============= DecayTask Manager Report ============\r\n";
		ret += "Tasks count: " + _decayTasks.size() + "\r\n";
		ret += "Tasks dump:\r\n";
		Long current = System.currentTimeMillis();
		for (L2Character actor : _decayTasks.keySet())
			ret += "Class/Name: " + actor.getClass().getSimpleName() + "/"
					+ actor.getName() + " decay timer: "
					+ (current - _decayTasks.get(actor)) + "\r\n";
		return ret;
	}
}
